Chapter 9 IMPULSE AND MOMENTUM COLLISION PROBLEMS A tennis ball and racket collision: a microscopic view COLLISION: FORCE VS TIME GRAPH A large force exerted during a small interval of time is called an impulsive force. LINEAR MOMENTUM The product of the particle’s mass and velocity is called the linear momentum p = mv As a vector quantity‚ the momentum can be represented in terms of its components: px= mvx py= mvy ALTERNATIVE FORM OF NEWTON’S SECOND LAW F = ma = m(dv/dt) =
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Table 8.1- Combustion of magnesium ribbon Observations Reaction was exothermic; magnesium ribbon burned and was glowing a bright white color when ignited. Reactants: Mg and O2 Products: MgO Balanced chemical equation 2Mg + O2 2MgO Table 8.2- Combustion of heptane Observations When holding test tube inverted over heptane flame‚ condensation formed against top walls of the test tube. When the burning splint was added the walls of the test tube became less foggy from the condensation
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In Search of Excellence: Review In Search of Excellence is a book dealing with many different principles of economics and what makes big business’ excellent. The first idea that Peters discusses is his chart of the McKinsey 7-S Framework. The graph is very simple but the ideas are fairly complex. In their research‚ they found that their philosophies were too hard to explain and easily forgettable. They made this Framework to deal with strategy‚ structure‚ style‚ systems‚ staff (people)
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9 weeks. To respond to the movement of a 30cm cube placed 1m away. Each time the baby turned its head towards the cube it was rewarded. Once Bower was sure it had associated the cube with rewards he then introduced 3 different cubes (30cm – 3m away‚ 90cm – 3m away and a 90cm – 1m away). He then tested the different responds to each cube and concluded from this study that babies have innate size constancy. IT is difficult to draw conclusions from infant studies as babies cannot speak or understand
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CPU - Central Processing Unit: Pronounced as separate letters‚ CPU is the abbreviation for central processing unit. Sometimes referred to simply as the central processor‚ but more commonly called processor‚ the CPU is the brains of the computer where most calculations take place. In terms of computing power‚ the CPU is the most important element of a computer system. On large machines‚ the CPU requires one or more printed circuit boards. On personal computers and small workstations‚ the CPU is
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#1 The three types of leadership styles that should be used for the Denver Airport Project are transformational‚ directive and empowering leadership. Transformational leadership should be used because the City of Denver seemed to have high expectations and this type of leadership motivates the team to work toward the goals and do more than expected. Issuing instructions and commands that align with the goals would include the use of Directive leadership. Lastly empowering leadership should
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It is the longest dimension of an object. DOWN 2 It is the number of square units inside a polygon. 4 It states the quality of being wide. 3. Presentation 1. Mang Tonyo’s vegetable garden is rectangular in shape. If it’s length is 3m and its width is 2m‚ how many square meters can be planted with vegetable? * Who owns the vegetable garden? * What did he plant in the garden? * What is the shape of his garden? Ask the following questions 1. What is asked
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1: Substitute the values in the below potential energy formula: Potential Energy: PE = m x g x h = 6 x 9.8 x 20 Potential Energy: PE = 1176 Joules 2. On a 3m ledge‚ a rock is laying at the potential energy of 120 J. What will be the mass of the rock. PE = 120 J‚ h = 3m‚ g = 9.8 m/s2(Gravitational Acceleration of the earth) Step 1: Substitute the values in the below Velocity formula: 3. A ball of mass 2 Kg is kept on the hill of height
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a) 2 :3 b) 3 :2 c) 4 :9 d) 9:4 6. The no. of two digits that are divisible by 6 is a) 12 b) 16 c) 15 d) 18 7. The angle of depression of an object from a 60m high tower is 30O. The distance of the object from the tower is a) 20√3 m b) 60√3 mc) 40√3m d) 120m 8. A solid metal cone with radius of base 12 cm and height 24 cm
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Chemical Reactions and their Classifications 26 October 2012 Abstract: Ordinary laboratory ware was used to determine how many of what type of chemical reactions occurred. This yielded three decomposition reactions‚ four substitution reactions‚ and three metathesis reactions. Introduction There are many different types of chemical reactions in the study of chemistry; A composition reaction (also known as synthesis) is defined as the reaction that occurs when two single compounds combine in
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